<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8" />
    <title>index</title>
</head>
<body>
freemarker模板引擎
<h1>${user.userId}</h1>
<h1>${user.name}</h1>
<h1>${user.desc}</h1>
<h1>${user.birthday?string("yyyy-MM-dd")}</h1>
</body>
</html>